package team.nmsg.ge.system.init.jpa;

import java.sql.SQLException;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.orm.jpa.vendor.HibernateJpaSessionFactoryBean;

import team.nmsg.ge.system.util.ServerParams;

import com.alibaba.druid.pool.DruidDataSource;

/**
 * DruidDBConfig类被@Configuration标注，用作配置信息； DataSource对象被@Bean声明，为Spring容器所管理，
 * 
 * 注意@Primary表示这里定义的DataSource将覆盖其他来源的DataSource。
 */
@Configuration
public class DruidDBConfig {
	// private Logger logger = LoggerFactory.getLogger(DruidDBConfig.class);

	@Value("${spring.datasource.url}")
	private String dbUrl;

	@Value("${spring.datasource.username}")
	private String username;

	@Value("${spring.datasource.password}")
	private String password;

	@Value("${spring.datasource.driver-class-name}")
	private String driverClassName;

	@Value("${spring.datasource.initialSize}")
	private int initialSize;

	@Value("${spring.datasource.minIdle}")
	private int minIdle;

	@Value("${spring.datasource.maxActive}")
	private int maxActive;

	@Value("${spring.datasource.maxWait}")
	private int maxWait;

	@Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
	private int timeBetweenEvictionRunsMillis;

	@Value("${spring.datasource.minEvictableIdleTimeMillis}")
	private int minEvictableIdleTimeMillis;

	@Value("${spring.datasource.validationQuery}")
	private String validationQuery;

	@Value("${spring.datasource.testWhileIdle}")
	private boolean testWhileIdle;

	@Value("${spring.datasource.testOnBorrow}")
	private boolean testOnBorrow;

	@Value("${spring.datasource.testOnReturn}")
	private boolean testOnReturn;

	@Value("${spring.datasource.poolPreparedStatements}")
	private boolean poolPreparedStatements;

	@Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
	private int maxPoolPreparedStatementPerConnectionSize;

	@Value("${spring.datasource.filters}")
	private String filters;

	@Value("{spring.datasource.connectionProperties}")
	private String connectionProperties;

	@Bean
	@Qualifier("DataSource")
	// 声明其为Bean实例
	@Primary
	// 在同样的DataSource中，首先使用被标注的DataSource
	public DataSource dataSource() {
		
		dbUrl = dbUrl.replace("MYSQL_HOST", ServerParams.MYSQL_HOST)
				.replace("MYSQL_PORT", ServerParams.MYSQL_PORT+"")
				.replace("MYSQL_DB", ServerParams.MYSQL_DB);
		
		ServerParams.dbUrl = dbUrl;
		ServerParams.dbDrivername = driverClassName;
		ServerParams.dbUsername = username;
		ServerParams.dbPassword = password;
		
		DruidDataSource datasource = new DruidDataSource();
		datasource.setUrl(this.dbUrl);
		datasource.setUsername(username);
		datasource.setPassword(password);
		datasource.setDriverClassName(driverClassName);

		// configuration
		datasource.setInitialSize(initialSize);
		datasource.setMinIdle(minIdle);
		datasource.setMaxActive(maxActive);
		datasource.setMaxWait(maxWait);
		datasource
				.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
		datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
		datasource.setValidationQuery(validationQuery);
		datasource.setTestWhileIdle(testWhileIdle);
		datasource.setTestOnBorrow(testOnBorrow);
		datasource.setTestOnReturn(testOnReturn);
		datasource.setPoolPreparedStatements(poolPreparedStatements);
		datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
		try {
			datasource.setFilters(filters);
		} catch (SQLException e) {

		}
		datasource.setConnectionProperties(connectionProperties);

		return datasource;
	}
	
	
    @Bean
    public HibernateJpaSessionFactoryBean sessionFactory() {
        return new HibernateJpaSessionFactoryBean();
    }
}